@charset "utf-8";
/* CSS Document */
*{margin:0;padding:0;}
body{font-size:12px;font-family:Arial,"宋体", Helvetica, sans-serif;}
ul li{list-style:none;}
a{text-decoration:none;cursor:pointer;}
img{border:0;}
em{font-style:normal;}
.clear{clear:both;}





#main{
    text-align: center;
    height: 797px;
}
#main h2{
    padding-top: 80px;
    line-height: 51px;
    font-size: 28px;
}
#nav .hover{
    color: #e6270b;
}
#nav a:hover{
    color: #e6270b;
}
#nav ul{
    width: 600px;
    height: 52px;
    margin: 0 auto;
}
#nav ul li{
    width: 120px;
    height: 52px;
    float: left;
}
#nav ul li a{
    line-height: 52px;
}
#pic ul li{
    float: left;
}
#pic ul li a{
    display: block;
    height: 184px;
    width: 285px;
    position: relative;
}
#pic ul li span{
    display: block;
    height: 184px;
    width: 285px;
    background-color: rgba(0,0,0,0.5);
    position: absolute;
    top:0;
    left:0;
    opacity: 0;
}
#pic ul li span:hover{
    opacity: 1;
}
#pic ul li a img{
    height: 184px;
    width: 285px;
}